1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/* ****************************************************************************
* bmp_16_or.c -- Display a 16x16 BMP, using ORs.
* Copyright (C) 2011 Pierre "PierrotLL" Le Gall <legallpierre89@gmail.com>
* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
*
* This file is part of the 'casiowin/monochromelib' module,
* in libcarrot, an experimental modular libc project.
*
* This file is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This file is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Lesser Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this file. If not, see <http://www.gnu.org/licenses/>.
* ************************************************************************* */
#include <monochrome.h>
void ML_bmp_16_or(const unsigned short *bmp, int x, int y)
{
unsigned long line;
char i, shift, begin=0, end=16, *screen, *p=(char*)&line+1;
if(!bmp || x<0 || x>112 || y<-15 || y>63) return;
if(y < 0) begin = -y;
if(y > 48) end = 64-y;
shift = 8-(x&7);
screen = ML_vram_adress()+(y+begin<<4)+(x>>3);
for(i=begin ; i<end ; i++)
{
line = bmp[i]<<shift;
screen[0] |= *p;
screen[1] |= *(p+1);
if(shift!=8) screen[2] |= *(p+2);
screen += 16;
}
}
|